6149626391 has 2 divisors, whose sum is σ = 6149626392. Its totient is φ = 6149626390.

The previous prime is 6149626387. The next prime is 6149626429. The reversal of 6149626391 is 1936269416.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6149626391 - 2² = 6149626387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6149626321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3074813195 + 3074813196.

It is an arithmetic number, because the mean of its divisors is an integer number (3074813196).

Almost surely, 2^6149626391 is an apocalyptic number.

6149626391 is a deficient number, since it is larger than the sum of its proper divisors (1).

6149626391 is an equidigital number, since it uses as much as digits as its factorization.

6149626391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 47.

The square root of 6149626391 is about 78419.5536266306. The cubic root of 6149626391 is about 1832.1016982335.

The spelling of 6149626391 in words is "six billion, one hundred forty-nine million, six hundred twenty-six thousand, three hundred ninety-one".